def main():
    X = int(input())
    ans = 8-(X-400)//200
    print(ans)


if __name__ == "__main__":
    main() def main():
    X = int(input())
    ans = 8-(X-400)//200
    print(ans) main X = int(input()) X int(input()) int input() input ans = 8-(X-400)//200 ans 8-(X-400)//200 8 (X-400)//200 X-400 X 400 200 print(ans) print ans if __name__ == "__main__":
    main() __name__ == "__main__" __name__ "__main__" main() main def main():
    X = int(input())
    ans = 8-(X-400)//200
    print(ans) def main():
    X = int(input())
    ans = 8-(X-400)//200
    print(ans) main
def main():
    X = int(input())
    ans = 8-(X-400)//200
    print(ans)


if __name__ == "__main__":
    main()
